Sawmill-setting apparatus.



No. 833,972.v PAT'BNTED 0013.23, 1906.

E. H. PERGY, JB. SAWMILL SETTINGv APPARATUS.

` APPLIOATION FILED AUG.24, 1905. (Y I 3 SHEETS-SHEET 2.

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UNITED. sTATEs PATENT oEEIcE.

EDWIN H. PERCY, JR., OF FORT BRAGG, CALIFORNIA.

SAWNIILL-SETTING APPARATUS.

n No. 833,972.

Specification of Letters Patent.

Patented Oct. 23, 1906.

. To4 all whom it may concern,.-

-Be it known that I, EDWIN I-I. PERCY, Jr., a citizen of the UnitedStates of America, residin at Fort Bragg, county of Mendocino, and tateof California, have invented certain new and useful Improvements inSawmill-Setting Apparatus; and I hereby declare .the following to be afull, clear, and, l exact` description of the same, reference being hadto the accompanying drawings, forming a part of this specification.

' This invention relates to timber-sawmills and the carriages on whichthe lo s or timber isy traversed, and relates especia ly to what istechnically called the settin machinery or apparatus by means of whicthe logs are advanced to the saw after each out is made, as hereinafterdescribed in this specification, and illustrated by drawings that form apart thereof. Y

The invention consists in continuouslydriven machinery to operate thesettingworks, connected therewith by frictional gearing that moves the,traversing screws and knees, andconnected therewith a graduatedcircular gaging and indicating disk having a movable detent or stop todetermine the range of the knees and instantly stop the same by africtional clamp operated by an attendant and arresting definitely the-motion of the frictional driving-gearingthat moves or sets the timber;also', consists in constructive and other features that will be morefully pointed out by the aid of the 35 drawings.

Referring to the drawings, Figure I is a lan view of the carriage for asawmill with Its connected parts constructed according to my invention.Fig. II is an edge or side view of the device shown in Fig. I. Fig.r IIIis an end view of the same with a log mounted thereon. Fig. IV is anenlarged side view of a part of the setting mechanism. Fig. V is a planview of the part shown in Fig. IV, and Fig. VI a side view of the sameat a right angle to the view of Fig. IV.; A In setting machinery forsawmill-carriages to advance the timber to the saw various and varyingdistances are required as the work progresses, and when such settingmachinery Is driven by power its control demands special devices tosecure celerity and accuracy. When engagement is made by frictionaldevices, these have to perform a vmotion of definite range withinamoments time, and as frictional gearing is not capable of producing apositive movement stop and indicating devices are required that musthave visible and instant action without slipping the frictionaltransmitting gearing to a de gree that will wear or injure the surfacesin contact. The range of setting or the thickness of pieces to be sawedat each out can be determined by positive stops for the next cut whileone is being made; but such adjustment must be positive, instantaneous,and in practice not exceeding a seconds time. To meet theserequirements, I construct machinery and devices as shownin the drawings,1 being the main carriage-rails held together by bolts and struts 21; 2,cross members of the same projecting laterally to sustain the members 3,on which is mounted the driving and setting machinery, as seen in Fig.I.

'The setting machinery consists of the timber-supports 4, knees 5,screws 7, the two shafts 8 yand 9, pulleys 10 and 12, frictionalgear-wheels 13, 14,`and 15, spur-wheels 17 and 18, bevel-wheels 19 and20, all as shown in Fig. I. This setting machinery is driven by anendless band 22, that passes partly around thepulleys l0 and 12, vasshown in Fig. II, and permits free movement of the' carriage forward orback on the truck-wheels 23 without other resistance than the tractivestrain of the band 22, which at the end passes around a driving-pulleyin the usual manner of, such earing. The shaft y8 is driven right andleft y the bevel friction-wheels 13 14 15 and is engaged by an endmovement of this shaft produced by the short shaft 24, having a bearingat 25, a screw-nut 27 thereon, the latter connected by a shackle device28 to the end of the shaft 8, as shown in Fig. I. The shaft 24 isoperated by a lever 29, a lever 30, link 32, lever 33, andl shaft 34, onwhich is the operating-lever 29, within reach of an attendant whosestation is at A, Fig. I.

Referrin especially to Figs. IV, V, and VI, which i lustrate theindicating and controlling devices for setting the timber 35, 37 is ashort vertical shaft connected to the shaft 9 by the bevel-wheels 38.This shaft 37 has a bearing 40 on the lower frame 42 and at the topturns loosely in the nave or hub 43 IOO IIO

sition shown in Figs. V and VI. When the sawed from the timber 35.

lever 50 is raised, the cam 49 loosens the pin 48 and permits the disk44 to revolve freely, a rod 52 and spring 53 being provided to preventthis lever from being accidentally raised, also to return the parts totheir locked position as soon as it is released by an attendant. In theface of this disk 44 are drilled a row of space-holes 54, the distancebetween these representing a unit of movement for the arm 39, which isregularly attached to the top of shaft 37 and permits definite movementof the shafts 9, screws 7, the knees 5, and the timber 35, preferablyone-fourth of an inch of the latter for each hole and space 54 when thescrews 7 have a pitch of four inches for each revolution.

ln the face of the disk 44 are two pins 55 and 57, which limit therotary range of the arm 39 and the shaft 37, the first being fixed andcalled the starting pin or point and the second one, 57, the setting orgaging pin to determine the range of the setting movement. An attendantor sawyer stationed at A, Fig. l, can control the three elements for adjustment-the friction-clutch motion for the shafts 8 and 9, the lever 50to disengage the disk 44, and the adjustment of this disk.

The operation is as follows: Supposing the log or timber 35 is to beadvanced a sufficient distance to cut a board one inch thick and the arm39 is bearing against the fixed pin 55, as seen in Fig. V, the operatorfirst moves the setting-pin 57 five holes or four spaces ahead to theposition shown in the same figure. The lever 29 is then pressed forward,engaging the friction-wheels 14 and 15, starting the shafts 8 and 9, thescrews 7 and the shaft 37 turning the arm 39 until it strikes againstthe pin 57, which arrests the motion of all the parts, the lever 29being at the same time or a little in advance drawn back to release thefrictionwheels 14 and 15. The clutch-wheels 13, 14, and 15 have smoothfaces and being driven by frictional contact only the movement to engageand disengage them is short and quick to avoid sliding the contactingfaces. This advances the timber 35 one inch, also the thickness of asaw-kerf, which must be provided for in each case. This latter isaccomplished automatically at each setting by the relation between thepins 55 and 57, which are so placed that a space (shown at 58 in Fig. V)represents the saw-kerf and is added to the movement of the arm 39. Whenthe arm 39 strikes the pin 57 and is stopped, the attendant raises thelever 50, releasing the disk 44, which is turned until the fixed pin 55again comes in contact with the arm 39, so that after each cut thegaging of thickness is done by simply turning the disk 44 after each cutuntil the pin or stop 55 contacts the arm 39, not requiringI skill oreven observation so long as pieces of the same thickness are being Theposition of the disk 44 and of the arm 39 being visible to a headsawyer, who stands at some distance therefrom, he can from the relativepositions of these parts see how to best dispose of so much of a balk orlog as remains to be sawed. At the beginning the setting parts are soadjusted that the arm 39 will stand transverse to the log and line ofthe saw when the knees 5 are at an even number of inches from the lineof the saw or cutting face, so that the sawyer can determine from therevolutions of the arm 39 and its relation of position to the disk theamount of the balk or log sawed off and howbest to dispose of theremainder. In this manner the whole control becomes simple and in asense automatic, the attendant merely operating the levers 29 and 50,setting the pin 57, and turning the disk 44. To reverse the motion ofthe machinery and draw the head-blocks 5 back after a log is finishedand to place another on the carriage, the lever 50 is raised to loosenthe disk 44 and permit it to revolve with the arm 39, the lever 29 isdrawn back, engaging the friction-wheels 13 and 15, as will beunderstood.

Having thus explained the nature and objects of myinvention, what lclaim to be new, and desire to secure by Letters Patent, is-

1. In sawmill-setting apparatus, a movable carriage carrying transversetimbersupports, traversing knees on said supports, parallel transversescrews connected with said knees for shifting the timber laterally, mainshaft and gears for simultaneously operating said screws, frictionalgearing for alternately operating said main shaft and screws in oppositedirections, means for alternately throwing said frictional gears intoand out of operation, a vertical shaft geared to said main shaft, astop-arm on said shaft, a disk over which said stop-arm may move, saiddisk having a home stop against which the back of the stop-arm restsbefore adjustment for a cut, and a stop adjustable to differentdistances from said home stop to limit the forward movement of saidstop-arm, said disk being revolubleforward to bring the home stop againagainst the backof the stop-arm and to correspondingly advance theadjustable stop when another advance of the knees is desired, and meansfor securing the disk against movement so that the adjustable stop mayact in its advanced position to gage the movement of the stop-arm,substantially as specified.

2. In sawmill-setting apparatus, a movable carriage carrying transversetimbersupports, traversing knees on said supports, parallel transversescrews connected with said knees for shifting the timber laterally, amain shaft and gears for simultaneously operating said screws,frictional gearing for alternately operating said main shaft and screwsin opposite directions, means for al- IOO IIO

- transverse screws connected with sai ternately throwing saidfrictional gears into and out of operation, a vertical shaft geared tosaid main shaft, a stop-arm on said shaft, a disk over which saidstop-arm may move, said disk having a home stop against which the backof the stop-arm rests before adjustment for a cut, and a stop adjustableto different distances from said home stop to limit the forward movementof said stop-arm, said disk being revoluble forward to bring the homestop again against the back of the stoparm and to correspondinglyadvance the ad- 'ustable stop when another advance of the ees isdesired, and means for securing the disk against movement so that theadjustable stop may act in its advanced position to gage the movement ofthe stop-arm, said stops comprising pins adapted to be inserted in holesin the disk, substantially as specified.

3. In sawmill-setting apparatus, a movable carriage carrying transversetimber-supports, traversing knees on said supports, arallel knees forshifting the timber laterally, main shaft and gears forl simultaneouslyoperating said screws, frictional earing for alternately operating saidmain s aft and screws in opposite directions, means for alternatelythrowing said frictional gears into and out of operation, a verticalshaft @eared to said main shaft, stoparm on said shaft, a disk overwhich said stop-arm may move, said disk having a home stop against whichthe back of the stop-arm rests before adjustment for a cut, and a stopadjustable to different distances from said home stop to limit theforward movement of said stop-arm, said disk being revolublel forward tobring the home stop again against the back of the stop-arm and tocorrespondingly advance the adjustable stop when another advance of theknees is desired, and means for securing the disk against movement sothat the adjustable stop may act in its advanced position to gage themovement of the stop-arm, said stops comprising pins adapted to beinserted in holes in the disk,

.transverse screws connected with sai one in a fixed position, forstopping the disk when adjusted, and one movable and insertspecified.

4. In sawmill-setting apparatus, ay movable carriage carrying transversetimber-supports traversing knees on said supports, arallel knees forshifting the timber laterally, main shaft and gears for simultaneouslyoperatin said screws, frictional gearing for alternate y operating saidmain shaft and screws in opposite directions, means for alternatelythrowing said frictional ears into and out of operation, a vertica shaftgeared tosaid main shaft, a stop-arm on said shaft, a disk over whichsaid stop-arm may move, said disk having a home stop against which theback of the stop-arm rests before adjustment for a cut, and a stopadjustable to different distances from said home stop to limit theforward movement of said stop-arm, said disk being revoluble forward tobring the home stop again against the back of the stop-arm and tocorrespondingly advance the adjustable stop when another advance of theknees is desired, means for clamping the disk against movement so thatthe adjustable stop may act in its advanced position to gage themovement of the stop-arm, and levers for respectively controlling saidclampin means and saidvfrictional gearing, locate within easy reach ofan operator stationedto observe the relative positions of said disk andsaid stop-arm, substantially as specified.

In testimony whereof I have signedmy name to this specification in thepresence of two subscribing witnesses.

EDWIN II. PERCY, JR. v Witnesses:

C. E. KING, ABBE P. SCOTT.

